Blow-off cock for boilers.



R. L. INGERSOLL & T. J. DOUROS.

BLOW-OFF COCK FOR BOILERS.

y APPLICATION FILED FEB.26. 1915.

Patented July 20, 1915.

[Rayma-sr.. .Ufern .son

. y ZJDol/Ros B3 da JM y @Nil sauras i y FlllQE.

BLOW-err icoon ron seitens.

ilmenau.

Specification of Letters Patent. Pat-,sented July 2Q, 19115..

y.Application led February 26, 1915. Serial No. 10,810.

; T all whom it may concern:

Be it known that we, Bonner L. INGER- soLL and THOMAS J. Donnos,citizens of the United States of Ainerica,and residents of Boone, Boonecounty, lowa, have invented a new and'useful Blow-Off Cock for Boilers,of which the following is a specification.

The object of this invention is to provide an improved construction forblow-olf cocks yforA engineboilers and the like.

A further'object of this invention is to provide an improvedconstruction to facilitate removal of sediment from boilers and `toaccomplish this quickly and thoroughly.

V tion,` arrangement and combination of eledicating altered position ofsome of theparts' Figs. 3 and A are cross-sections on n the line 3f4= ofFig. 1, showing the device in closed and open position, respectively.

ylnthe construction of the device as shown the numeral 10 designates abase member of generally tubular form and open at both ends. The basemember 10 is eXteriorly threaded intermediate of its ends and is screwedinto a threaded opening at the def sired place in a boiler, a portion ofwhich is shown and designated by the numeral 11.y

The connection of the base member 10 to the boiler plate 11 preferablyis by a tapered thread, to insure a tight lit and prevent leakage. Thebase member 10 is interiorly threaded at its inner end and a shell 12 isscrewed therein and closes the inner end of said base member. The shell12 is hollow, is open at its inner rend and closed at its outer end,which outer end is formed with an angular projection 13 by means ofwhich said shell is screwed into place. llhe base member 10 isexteriorly 'threaded at its outer end and a casing member 14 of tubularformy and open at both ends is screwed thereon. |The casing 141 isformed with an internal flange or shoulder 15 near its inner end, and

packing such as 16 preferably is mounted between said flange and theouter end of the base member 10. A tubular valve member 17is mounted inthe casing 11 and base member 10 and projects slightly from said casingat its outer end. The inner wall of the inner end of the base member 10,and the outer wall of the inner end of the shell 12 are oppositelytapered to form a tapering annular recess therebetween, and the innerend of the tubular valve 17 has its `walls tapering to fit snugly withinsaid recess. A cap member 18 is screwed on the exteriorly threaded outerend of the casing 141 over the projecting end of the tubular valve 17.The cap 18 is formed with an internal shoulder' 19 adjacent its innerend, and packing such as 2O is mounted between said shoulder and theouter end of the casing 14C. An eXpansive spring 21 is coiled around theouter end portion of the tubular valve 17 and impinges at one end theshoulder 19 and at its yopposite end ay peripheral flange 22 on saidtubular valve. lt is the function of the spring 21 to hold the tubularvalve 17 snugly to its seat between the members 10 and 12.

The inner end of the base member 10 is formed with apertures 23, and theshell' 12 is formed with apertures 2A in alinement with said apertures23. The inner end of the tubular valve 17 is formed with apertures 25adapted to register at times with the apertures 23, 24, as shown in Fig.4, and to be moved out of register therewith at times, by rotation ofsaid valve member, as shown in Fig. 3. j

f The casing 14 is formed with a transverse slot 26 intermediate of itsends, and a closing hand or ring 27 is rotatively mounted on said casingand closes said slot. An operating handle 28 is mounted snugly through`the closing ring 27 and loosely through the slot 26, and is screwed atits inner end into the tubular valve 17. rlhe operating handle 28projects radially outwardly and is formed with a hole 29 in its outerend to receive connection of an operating rod (not shown) or otherdevice leading to reach of the operator.

A nipple 30 is screwed in the interiorly threaded outer end of the cap18 and is adapted to receive connection of a pipe such as 31 leading tosuitable place of discharge.

In practical operation, the valve member 17 normally is kept turned inthe position shown in Fig. 3, or in closed position. lWhen it is desiredto remove sediment or dirty water from the boiler the handle 23 isturned to rotate the tubular valve 17 to the end of bringing theapertures 25 into register with l f carried away. The apertures 23, 24,-25 are relatively large, so that the discharge through the device israpid and without danger of clogging. The construction of the device,and particularly the use lof the tubular valve seated in a taperingrecess, prevents leakage during operation.

vThe cap 18 preferably is formed with an internal peripheral flange orshoulder 32 adjacent the outer end of the tubular'valve 17, to prevententrance of water and the like to the annular space outside of saidtubular valve in use. l f

lt will be observed that the tubular valve 17 maybe removed for repairs,such as regrinding, without removal of the device from the boiler,simply by removing the cap 1S and handle 28.

We `claim as our inventiony 1. A blow-od cock, comprising a casing,

a taperingseat in the inner end thereof, a

tubular valve rotatively mounted in said casing and spring-held to saidtapering seat, entrance openings in the sides 'of said casing, aperturesin the sides of said tubular valve adapted to register with the rstapertures, a ring rotatively mounted on said casing, said casing beingformed with a transverse slot covered by said ring, and a handle securedthrough said yring and passing loosely through said slot and screwedinto said tubular valve.

2. A blow-od cock, comprising a base member adapted to be screwed intoaboiler, a casing screwed on the outer .end of said base member, a shellscrewed inthe inner end of said base member, said base member and shellbeing tapered to form a tapering annular seat therebetween, a tubularvalve rotatively mountedin said casing and base member and tapered tofit said seat, entrance openings in the sides of said base member,openings in said shell in alineinent therewith, openings in the side ofsaid valve adapted to register with the above-mem tioned openings, andmeans for rotating said valve.

Co'pies of this patent maybe obtained for 3. blow-oil" cock, comprisinga base member adapted toA be screwedinto a boiler, a casing screwed onthe outer end of said base member, a shell screwedv in the inner end ofsaid base member, said base member and shell being oppositely tapered toform a tapering annular seat therebetween, a tubular valve rotativelymounted in said casing and base member andvtapered to lit said seat,said tubular valve being formed with a peripherallange intermediate ofits ends, a cap lscrewed on theouter end of said casing and formed withan internal shoulder, a spring lcoiled around the outer. end portion ofsaid tubular valve and iinpinging said lla-nge andshoulder,entranceopenings in the sides of said base member, openings in the shellin alinement-therewith, openings 'in the side of said valve adapted toregister with the above-mentioned openings, and means 'for rotatingsaid, valve.

l, A blow-off cock, comprising facasing,

a shell 'screwed in the inner end thereof, said casing and shell beingtapered to form a tapering annular seat therebetweenJ `a tubu lar valverotatively mounted in` said casing and fitted lto' said seat, entranceopenings in the sides of said casing, -openings in said shell inalinement therewith, 'openings in the sides of said .valve adapted toregister with the openings of said casing and shell, a cap screwed onthe outer end of said casing, a conductor leading from said cap, andmea-ns for rotating said valve,v A

A blow-oil cock, -comprising a casing, a shell 'screwed in the inner endthereof, said casing `and shell being oppositely tapered to form Lanannular tapered seat therebetween, a tubular valve rotatively mounted insaid casing and fitted to said seat, alining open` ings in the lsides ofsaid casing and shell, openings in said valve adapted to registertherewith, said casing being formed with a transverse slot, a ringrotatively mounted' on said casing and covering said slot, and a handlesecured through saidring and passing loosely through said slot yandsecured to said tubular valve. n

Signed by us at Boone, lowa, this 14th day of January, 1915.

ROBERT L. NGERSOLL. THOMASv J. DOUROS.

Witnesses: l

Francis YV. Granola, WILLIAM JOHN 'CAnswELn veeents each, by addressingthe Commissioner of Patents, Washington, D. C. i

